Table 4.

Linear regression model summary predicting 4-month weight loss with 8-week data.

Coefficients	b (SE)	t test (df)	P value
Intercept	−1.89E−02 (1.67E−02)	−1.14 (148)	.25
App-use (PC1a)	4.51E−03 (1.35E−03)	3.34 (148)	.001
App-calories (PC2b)	6.20E−03 (2.06E−03)	3.01 (148)	.003
Treatment assignment	8.71E−03 (7.30E−03)	1.19 (148)	.23
Age	3.98E−04 (3.97E−04)	1 (148)	.32
Self-weighing frequency at 8 weeks	6.58E−04 (2.41E−04)	2.73 (148)	.007

^aPC₁: principal component 1.

^bPC₂: principal component 2.